What’s Vulnerable › Vulnerabilities

CVE-2026-90202: scsi: mpt3sas: Avoid freeing unallocated PCIe SGL buffers

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: mpt3sas: Avoid freeing unallocated PCIe SGL buffers _base_release_memory_pools() unconditionally frees every ioc->pcie_sg_lookup[] entry, including ones the setup loop never allocated after a partial failure, causing a "bad dma" warning on debug kernels or a NULL pointer dereference otherwise.

Affected products

• Linux kernel: 4.16 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/240b582b6372bebb1245d911add9954b7dd6c02d
• https://git.kernel.org/stable/c/2dbdd025b228110ccbfbab95fe16e098313a14af
• https://git.kernel.org/stable/c/3361709fb6f6568b157c6f24ed21a4a5d86d73db
• https://git.kernel.org/stable/c/a61181f9ee30a98d2350c1bff32954a7521f9a23
• https://git.kernel.org/stable/c/afedf35df054bd713e9e13771aa0a056932c5c67
• https://git.kernel.org/stable/c/b9f679dfe629004b593f018df33b330d799bcee4
• https://git.kernel.org/stable/c/bc3398db3b64729b4a7907af317daad04795ad40
• https://git.kernel.org/stable/c/e2cd23443d3616ea0876f27762b17e2ec67d896c

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